Simple currency converter in JAVA

Here goes a simple JAVA code to convert rupees by using the online yahoo exchange rates.

package com.oksbwn.currencyRate;
import java.io.IOException;

import javax.swing.JOptionPane;

import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.*;

import com.oksbwn.popUp.popMe;

public class YahooCurrencyConverter {
    @SuppressWarnings({
        "deprecation",
        "resource"
    })
    public float convert(String currencyFrom, String currencyTo) throws IOException {
        HttpClient httpclient = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet("http://quote.yahoo.com/d/quotes.csv?s=" + currencyFrom + currencyTo + "=X&f=l1&e=.csv");
        ResponseHandler responseHandler = new BasicResponseHandler();
        String responseBody = httpclient.execute(httpGet, responseHandler);
        httpclient.getConnectionManager().shutdown();
        return Float.parseFloat(responseBody);
    }
    public void convertToRs() {
        String to = null;
        String amnt = JOptionPane.showInputDialog(null, "Any to rupee..", "$");
        //if ("$".charAt(0).(();
        if (amnt.substring(0, 1).compareTo("$") == 0)
            to = "USD";

        if (amnt.substring(0, 1).compareTo("E") == 0)
            to = "EUR";
        double ghh = 1;
        try {
            ghh = Double.parseDouble(amnt.substring(1));
        } catch (Exception e) {}
        YahooCurrencyConverter df = new YahooCurrencyConverter();
        try {
            float x = df.convert(to, "INR");
            new popMe("Exchange rate is" + x, "From " + to + " to INR", "exp", 6, 125);

            JOptionPane.showMessageDialog(null, x * ghh);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}